As a kitchen knife, Case knives aren't all that remarkable. New, a set of Case kitchen knives with block goes for around $150, which is better than the $39 wally world sets, and better than the $19 ginsu knives, but not quite as exciting as quality kitchen knives that go for $100+ per knife. So, without a pic showing the knife is made of solid gold, signed by Elvis, or covered in diamonds, it's likely worth around $20 if it's a 10" chef's knife in like new shape.